[edk2-staging/RiscV64QemuVirt PATCH V7 16/20] OvmfPkg/RiscVVirt: Add VirtNorFlashPlatformLib library

["Sunil V L" <sunilvl@ventanamicro.com>]

Qemu NOR flash driver needs this library. Add this
library for RISC-V leveraged from SbsaQemu.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Abner Chang <abner.chang@amd.com>
---
 OvmfPkg/RiscVVirt/Library/VirtNorFlashPlatformLib/VirtNorFlashStaticLib.inf | 30 +++++++++++++++
 OvmfPkg/RiscVVirt/Library/VirtNorFlashPlatformLib/VirtNorFlashStaticLib.c   | 40 ++++++++++++++++++++
 2 files changed, 70 insertions(+)

diff --git a/OvmfPkg/RiscVVirt/Library/VirtNorFlashPlatformLib/VirtNorFlashStaticLib.inf b/OvmfPkg/RiscVVirt/Library/VirtNorFlashPlatformLib/VirtNorFlashStaticLib.inf
new file mode 100644
index 000000000000..4e87bd437380
--- /dev/null
+++ b/OvmfPkg/RiscVVirt/Library/VirtNorFlashPlatformLib/VirtNorFlashStaticLib.inf
@@ -0,0 +1,30 @@
+#/** @file
+#
+#  Component description file for VirtNorFlashStaticLib module
+#
+#  Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = VirtNorFlashStaticLib
+  FILE_GUID                      = 064742F1-E531-4D7D-A154-22315889CC23
+  MODULE_TYPE                    = DXE_DRIVER
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = VirtNorFlashPlatformLib
+
+[Sources.common]
+  VirtNorFlashStaticLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  OvmfPkg/OvmfPkg.dec
+
+[Pcd]
+  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFdBaseAddress
+  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFirmwareFdSize
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase
diff --git a/OvmfPkg/RiscVVirt/Library/VirtNorFlashPlatformLib/VirtNorFlashStaticLib.c b/OvmfPkg/RiscVVirt/Library/VirtNorFlashPlatformLib/VirtNorFlashStaticLib.c
new file mode 100644
index 000000000000..fdc2ccb6294e
--- /dev/null
+++ b/OvmfPkg/RiscVVirt/Library/VirtNorFlashPlatformLib/VirtNorFlashStaticLib.c
@@ -0,0 +1,40 @@
+/** @file
+
+ Copyright (c) 2019, Linaro Ltd. All rights reserved
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ **/
+
+#include <Base.h>
+#include <PiDxe.h>
+#include <Library/VirtNorFlashPlatformLib.h>
+
+#define QEMU_NOR_BLOCK_SIZE  SIZE_256KB
+
+EFI_STATUS
+VirtNorFlashPlatformInitialization (
+  VOID
+  )
+{
+  return EFI_SUCCESS;
+}
+
+VIRT_NOR_FLASH_DESCRIPTION  mNorFlashDevice =
+{
+  FixedPcdGet32 (PcdOvmfFdBaseAddress),
+  FixedPcdGet64 (PcdFlashNvStorageVariableBase),
+  FixedPcdGet32 (PcdOvmfFirmwareFdSize),
+  QEMU_NOR_BLOCK_SIZE
+};
+
+EFI_STATUS
+VirtNorFlashPlatformGetDevices (
+  OUT VIRT_NOR_FLASH_DESCRIPTION  **NorFlashDescriptions,
+  OUT UINT32                      *Count
+  )
+{
+  *NorFlashDescriptions = &mNorFlashDevice;
+  *Count                = 1;
+  return EFI_SUCCESS;
+}
-- 
2.38.0